2017_May_07 Crown

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Crown
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            Console.WriteLine("@{0}@{0}@", new string(' ', n-2));
            Console.WriteLine("**{0}*{0}**",new string(' ', n-3));


            int G = 0;
            for (int i = 1; i <= (n/2)-2; i++)
            {
                Console.WriteLine("*{0}*{1}*{2}*{1}*{0}*",
                    new string('.',i ) ,
                    new string (' ', (n-5)-G  /*(n/2)+1 - G*/) ,
                    new string('.', G+1));

                G += 2;
            }


            Console.WriteLine("*{0}*{1}*{0}*", new string('.',(n/2)-1) ,
                                              new string('.', G+1)) ;

            Console.WriteLine("*{0}{1}.{1}{0}*", new string('.',(n/2)),
                                                    new string('*',(n/2)-2 ));

            for (int i = 0; i <2 ; i++)
            {
                Console.WriteLine(new string('*',(2*n)-1));
            }

        }
    }
}